The Gulper, characterized by its circular shape, was a rolling droid equipped with a pair of arms and adorned with black and blue armor. This particular Gulper served as a guard for the Abominor Great Heep's mining venture on the planet Biitu during the year 15 BBY. Following the escape of the protocol droid C-3PO from one of the mines, the Gulper gave chase. C-3PO then warned the merchant Mungo Baobab about the Gulper's advance, leading Baobab to fire [water](/article/water/legends] at it, causing the Gulper to retreat back into the mine.
The Gulper made its debut in The Great Heep, a television special within the Nelvana animated show Star Wars: Droids, which initially aired on June 7, 1986.